Hi
Im new to this site and to ExpertFlyer.com so please bear with me.
I need some help understanding how to use Expertflyer.com.
I matched up a flight leaving from Manchester to Chicago with flight availability and fare information. Under the fare bucket NKXUKJB there were 4 available seats. When I phoned American Airlines to enquire about the fare I was told there was non available and the Fare basis code was to long. Am I looking at this the wrong way?

Any help would be appreciated.

Regards Steve